Imagine for a moment that you're a complete noob... OR better yet, you need to explain this to a complete noob... What does penetrate uke's center mean? I dunno... I'm a simple person... I like things simple... I rather have lots of little simple things than one big complex issue... if ya catch my drift...

FWIW... it doesn't make a difference how you are being grabbed... it works exactly the same way... This is the CORE of what we're trying to get at...

Michelangelo famously said that sculpting a statue was very simple. You just take a chisel and remove everything that is not statue.

He did not wield a chisel differently than the lowest stonemason's apprentice. He simpy knew exactly what he was aiming for and had was able to consistently hit the mark.

The problem is not one of differential technique but of refinement of perception, sensitivity and precision.